IS 6893 ( Part 7 ) : 1990 ( Reaffirmed 2002 ) Indiun Standard PROFORMA PART 7 FOR PURCHASE SPECIFICATION FORMACHINETOOLS" EXTERNAL CYLINDRICAL HORIZONTAL GRINDING SPINDLE MACHINES WITH UDC 658.711-6 ( 083.22) : 621*92+56 @ BIS 1991 BUREAU MANAK OF BHAVAN, INDIAN 9 BAHADUR NEW DELHI STANDARD'S SHAH 110002 Price Group 3 ZAFAR MARG Februacy 1991 Machine Tool Basics and Modular Units Sectional Committee, PE 03 FOREWORD This Indian Standard ( Part 7 ) was adopted by the Bureau of Indian Standards on 3 July 1990, after the draft finalized by the Machine Tool Basics and Modular Units Sectional Committee had been approved by the Production Engineering Division Council. The proforma a prospective This is meant can fill m the for preparation of purchase specification for machine tools has been -prepared to enable -buyer to collect data from various manufacturers/suppliers for purposes of comparison. to be sent out with an enquiry by the purchaser so that the manufacturers/suppliers data and send to the purchaser to make the comparison easief for the purchaser. has been taken `from the details supplied In the preparation of this standard, considerable assistance by the leading manufacturers and users of the product. Other proforma for purchase specification IS 6893 ( Part 1 ) : 1988 IS 6893 ( Part 2 ) : 1987 IS 6893 ( Part 3 ) : 1973 IS 6893 ( Part 4 ) : 1987 IS 6893 ( Part 5 ) : 1987 IS 6893 ( Part 6 ) : 1985 in this series are given below: Proforma for puchase specification for machine tools: Part 1 Sliding, surfacing and screw cutting lathes Proforma for purchase specification for machine tools: Part 2 Horizontal/ universal kneetype milling machines Cfirst revision ) Proforma for purchase specification for machine tools: Part 3 Radial drilling machines Proforma for purchase specification for machine tools: Part 4 Vertical boring and turning mills (first revision ) Proforma for purchase specification for machine tools: Part 5 Vertical milling machines (Jirst revision ) Proforma for purchase specification for machine tools: Part 6 Bench/pillar type drilling machines IS 6893 ( Part 7 ) : 1990 Indian Standard PROFORMA PART 7 FOR PURCHASE SPECIFICATION FOR MACHINE TOOLS EXTE-RNAL CYLlNDRlCAL HORIZONTAL GRINDING SPINDLE Title MACHINES WITH 1 SCOPE IS No. This Indian Standard (Part 7 ) lays down the proforma for purchase specification for external cylindrical grinding machines. It also gives essential information about the External Cylindrical Grinding Machines and their accessories which will enable the user to assess their usefulness and applicability. 2 REFERENCES 2.1 The following IS No. 5 : 1978 2582 ( Part 1 ) : 1972 Dimensions for1 athes spindle nose and fqce plates: Part 1 Spindle noses, : camlock type, Type A ( first revision ) Dimensions for lathe spindle nose and face plates; Part 2 Spindle noses, camlock type, Type B ( first revision ) 2582 ( Part 2 ) : 1972 Indian Standards sary adjuncts to this standard. Title are neces- Colours for ready mixed paints and enamels ( third revision ) Dimensions of three-phase footmounted induction motors ( third revision ) 2582 ( Part Dimensions for lathe spindle nose 3 ) : 1972 and face plates: Part 3 Spindle noses, bayonet type (first revision ) 2996 : 1980 Mounting dimensons of plain grinding wheels by means of hub flanges ( jirst revision ) Degrees of protection provided by enclosures for rotating electrical machinery (first revision ) Designation of methods of cooling for rotating electrical machines Mechanical vibration of rotating electrical machines with shaft and higher heights 56 mm measurement evaluation and limits of vibration severity. 1231 : 1974 1715 : 1987 2161 : 1962 2324 ( Part 2) : 1985 2368 ( Part 1 ) : 1979 Dimension for self holding tapers ( second revision ) Coolant pumps for machine tools 4691 : 1985 Bonded abrasive grinding wheels: Part 2 Dimensions ( second revision ) 6362 : 1971 revision ) Test chart for external cylindrical grinding machines with a movable table : Part 1 Grinding machines with centre to centre distance up to 1 600 mm (Jirst 12075 : 1987 i 1 IS 6893(Part 7 ):1990 3 PROFORMA Specijication Reference to Indian Standard Unit (3) Actual Value (4) (1) 3.1 Capacity 3.1.1 (2) 3.1.2 3.1.3 3.1.4 3.1.5 3.1.6 Maximum diameter of workpiece that can be ground ( with guard ) Maximum grinding length Distance between centres Distance with extended tailstock ( if applicable ) Maximum collet diameter a) Maximum weight of workpiece that can he held between centres - With steady rest - Without steady rest b) Maximum weight of workpiece that can be held in chuck mm mm mm P mm mm kg kg kg mm degree 3.2 Table 3.2.1 Maximum/minimum travel 3.2.2 Maximum swivel on either side 3.2.3 Table travel per revolution of hand wheel: a) Slow b) Fast 3.2.4 Infinitely i variable speed mm mm range/mm/ min S 3.2.5 Dwell of table reversal 3.3 Work Head 3.3.1 Type of head-stock dle/Dead spindle Live spinIS IS 2582 : 1972 1715 : 1987 3.3.2 Type and size of spindle nose 3.3.3 Type and size of internal taper in spindle 3.3.4 Spindle speeds No. and range 3.3.5 zayl;e; ( either side if appli- No./rpm range degree 3.4 Tailstock 3.4.1 Type: Manual/power operated IS 1715 : 1987 mm 3.4.2 Size of internal taper in quill 3.4.3 Quill travel: Manual/power operated ( whichever is applicable ) 2 IS 6893 ( Part 7 ) : 1990 Specification Reference to Indian Standard Unit Actual Value (1) 3.5 Wheel Head 3.5.1 Wheel head swivel ( if applicable ) 3.5.2 Rapid approach, maximum/ minimum degree mm/mm mm/mm mm h 3.5.3 Feed per revolution of handwheels on diameter, slow/fast in-feed at table 3.5.4 Automatic reversal on diameter, range 3.5.5 Maximum hydraulic slow grinding feed on diameter 3.5.6 Rate of plunge feed infinitely varible 3.6 Wheel Spindle 3.6.1 Type : A/l3 3.6.2 Size ( Diameter ) ~3.6.3 Speed 3.7 Grinding Wheel OD x ID x width 3.7.1 Size: ( New ) 3.7.2 Size: OD x ID x width ( worn out ) 3.7.3 Wheel speed-peripheral: New as well as Worn out permissible 3.8 Internal Applicable 3.8.1 Grinding Grinding ) Attachment ( if mm range mm/min IS IS 2996 : 1980 2996 : 1980 mm rpm IS 2324 : ( Part 2 ) 1985 mmxmmxmm mmxmmxmm m/min diameter, Max/Min 3.8.2 Grinding length, Max 3.8.3 Type of spindle and speed ( in rpm ) Type of lubrication 3.9 -Lubrication: ( Details to be specified ) 3.10 Safety Provisions: ( Details to be specified ) 3.11 Electricals 3.11.1 Total power 3.11.2 Power supply 3.11.3 Motor(s) 3.11.3.1 Main a) b) c) d) e) f) g) h) j) Type Frame size and mounting Output(s) Speed(s) No. of phase Power factor Efficiency Rated voltage Frequency IS 1231 : 1974 mm/ mm mm kW V, ph, Hz ~kW rev/min % V Hz IS 6893 ( Part 7 ) : la90 Speczjication Reference to Indian Stanaard Unit (3) Actual Value (4) (1) k) m) n) p) Type of duty Class of insulation Ambient temperature Type of protection q) Type of cooling r) Vibration limits s) Any other features (2) "C IS 4691 : 1985 1s 6362 : 1971 IS 12075 : 1987 3.11.3.2 Other motor(s) a) Type b) Frame size and mounting c) Output(s) d) Speed(s) e) No. of phase f) Power factor g) Efficiency h) Rated voltage j) Frequency k) Type of duty m) Class of insulation n) Ambient temperature p) Type of protection q) Type of cooling r) Vibration limits s) Any other features 3.12 Coolant Pump ' a) Output(s) of motor b) Speed(s) of motor c) Discharge of pump at maximum working height 3.13 Geometrical and Practical Test 3.14 Colour 3.15 Weight of Machine and Standard Accessories I IS 1231 : 1974 kW rev/min % V Hz "C IS 4691 : 1985 IS 6362 : 1971 IS 12075 : 1987 IS 2161 : 1962 kW rev/min l!min IS 2368 ( Part 1 ) : 1979 IS 5 : 1978 with Electrical kg 3.16 Standard Accessories ( Details of accessories - IS No. to be specified wherever applicable like centres, spanners, etc. ) 3.17 Special Accessories ( Details of accessories - IS No. to be specified wherever applicable like chuck, diamond tool, carbide tipped half centre, dust collector etc. ) 3.18 Floor Space Required ( length x width ) NOTE - While submitting quotations, the following information shall together with technical literature and capacity chart of the machine chart for External Cylindrical Grinding Machine 1. a) Hardness of bed guideways, and b) Any other special features, mmxmm be furnished by manufacturers/suppliers, ( see Annex A for represenrative capacity IS 6893 ( Part 7 ) : 1990 ANNEX REPRESENTATIVE CAPACITY A CYLINDRICAL GRINDING MACHINES CHART FOR EXTERNAL A - Overall length s - Overall width - Overall height D - Overall working length ( space ) E -- Distance between centres F - Distance between centres with extended tailstock ( if applicable ) G - Radial distance of work centre over table top surface H - Minimum distance of wheel axis to work axis Hl - Maximum distance of wheel axis to work axis NOTE - Dimensions given shall consider all the standard accessories. 5 h 8` Standard Mark The use of the Standard Mark is governed by the provisions of the Bureau of Indian Standards Act, 1986 and the Rules and Regulations made thereunder. The Standard Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard under a well defined system of inspection, testing and quality control which is devised and supervised by BLS and operated by the producer. Standard marked products are also continuously checked by BIS for conformity to that standard as a further safeguard. Details of conditions under which a licence for the use of the Standard Mark may be granted to manufacturers or producers may be obtained from the Bureau of Indian Standards. BLS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promote marking and quality certification of goods harmonious development of the activities of standardization, and attending to connected matters in the country. Copyright BIS has the copyright of all its publications. 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